Attachment for coffee-urns



J. N. SHAW.

ATTACHMENT FOR COFFEE URNS.

. APPLICATION FILED 001 30, 1920.

JghnZV. Shaw. 422mm @H g m WK m UNITED STATES JOHN N. SHAW, OF SEATTLE, WASHINGTON.

ATTACHMENT FOR COFFEE-URNS.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed October 30, 1920. Serial No. 420,748.

To all whom it may concern:

Be it known that 1, JOHN N. SHAW a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a certain new and useful Improvement in Attachments for Coffee- Urns, of which the following is a specification.

My invention relates to improvements in attachments for coffee urns and more particularly to improvements on the cloth receptacle disclosed in my patent for an attachment for coffee urns allowed February 17, 1920, No. 1,331,032, and an object of my invention is to provide improved means on the cylindrical shell of the receptacle that is adapted to enga e with means on the peripheral flange o the retaining member disposed within said receptacle to securely lock said member in position when the latter is seated within the cylindrical shell of the re ceptacle to thereby positively hold the cloth in said receptacle in any fixed desired position.

Another object is to provide means whereby the cloth may be stretched and held securely in a stretched position by a downwardly disposed foot member adapted to be operatively secured to said retaining memher.

A further object is to provide a receptacle which is simple and economical in construction, positive and eflicient in operation, and substantial and durable in service.

With the above and other objects in view which will appear as the description proceeds, my invention consists of the novel con struction, adaptation, combination and arrangement of parts hereinafter described and claimed.

I accomplish these objects by devices illustrated in the accompanying drawings, wherein- Figure 1 is a top plan view of a receptacle embodying the features of my invention, with the cloth removed, and

Fig. 2 is a view in vertical cross-section taken on a broken line 2, 2 of Fig. 1, with the cloth in position.

Referring to the drawings, throughout which like reference numerals designate like parts, the numeral 5 designates a tapered cylindrical shell, preferably formed of tin or other sheet metal, and adapted to be removably suspended within the upper end portion of a coffee urn not shown.

7 The shell 5 is provided at its bottom end with an upwardly curved internally project- I ing flange 6 to thereby form an annular groove or the reception of the lower periphery of a cloth retaining ring 7, the latter having a diametrically disposed integral cross-bar 8 which is provided with a central integral hub 9.

A stem 10 is disposed within a concentric hole in the hub 9 and is adjustably held therein by a set screw 11. Secured to the lower end of the stem 10 is an annular foot member 12 which is preferably made of smaller diameter than the ring 7 and is adapted to engage with and distend a cloth 13 of any suitable material in the form of a bag for the reception of ground coffee, as more clearly shown in Fig. 2, of the draw- The size of the bag formed by that portion of the cloth 13 which hangs below the shell 5 may be varied to suit the quantity of ground coffee that is to be used therein by varying the amount of cloth that hangs be-' low the shell 5 and raising or lowering the foot member 12 by means of the stem 10 and the cloth is stretched by pressing down on 7 said stem and held in position by the set screw 11. p

To support and fixedly retain the cloth 13 in any desired position against the tension of the foot member 12 the upper edge portion of the cloth overlaps the curved flange 6 of the shell and is positively held by the ring 7 seated in the annular groove formed by the flange 6.

The ring 7 is provided on its upper side with an inte al annnular flange 14the periphery of hich is adapted to fit snugly against the inner wall of the shell 5 to prevent liquid and ground coffee from passing down yvardly around the outer edge of the rm 0 positively clam or look the retaining ring 7 in position, I have formed on the inner wall of the shell 5 bosses 15 adjacent to its lower end adapted to be engaged by cam members 16 formed on the upper side of the annular flange 14: b raising or increasing the thickness of sai flange in a curvilinear manner.

A bead 17 is formed in the shell 5 adjacent to the lower end thereof for strengthening said shell against outward pressure caused by clamping the ring 7 in position.

The annular flange 14 is provided on its ping over the retaining ring7, the latter is inserted in the cylindrical shell 5, the slots 18 passing over the bosses 15, and pressed downwardly until the lower edge of said ring 7 enters the annular groove formed by the curved flange 6. The annular flange 14 together with its integralv and attached parts is turned until the cam members thereon bind upwardly and securely against the bosses 15 forcing the ringv 7 downwardly against the cloth 13 within the annular groove formed by the flange 6,

and Clamping same therein. The stem 10 is then pressed downwardly until the cloth 13 is sufficiently stretched by the foot member 12 and secured by the set screw 11.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation of my attachment for coffeeurn will be readily apparent to those skilled in the art to which the ini vention relates, and while I have described the. principle of operation of my invention, together .with the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shownis merely illustrative and that such changes may be made when desired as are within'the scope of the invention.

What I claim is;

1. In a device for forming a bag of variable size from a piece of cloth comprising curved internal flange forming an annular a cylindrical shell having an upwardly groove therein, a ring adapted to seat within said groove, a piece of cloth adapted to be held between said annular groove and said ring, a stem slidably mounted within said ring adjustable'means for securing said.

. stem within said ring, an annular foot memher disposed on the lower end of said stem and adapted. to engage and distend said cloth, bosses formed on the inner wall of,

ber disposed on the lower end of said stem in a plane perpendicular to the axis thereof, acloth disposed around said annular foot member and adapted to be fixedly secured between said} ring and said shell, bosses formed on the inner wall of said shell and clamping means carried by said ring adapted to engage said bosses to lock said ring to said shell.

3. In a device for forming a bagof variable siZe from a piece of cloth comprising a cylindrical shell having an upwardly curved internal flange forming an annular groove therein, a bead formed in said cylindrical shell adjacent to the upper edge of said internal flange, a ring adapted to seat within said groove,a cross-bar on said ring perpendicular to the plane thereof and having a concentric hole therein, a stem adapted for axial movement in said hole, adjustable means for securing said stem within said hole, an annularfoot member disposed on the lower end of said stem in a plane perpendicular to the'axis thereof, a cloth disposed around said annular foot member and adapted to be fixedly secured between said. ring and said shell, bosses formed on the inname thisv22nd day of October 

